C
—That must have been a long trip.
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相关问题
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----That must have been a long trip.
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— That must have been a long trip.
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–-That must have been a long trip.
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7.（2011北京卷,27）——That must have been a long trip.
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That must have a long trip.
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—That must have been a lot of work.
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—That must have been a lot of work.
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关于must的反意疑问句She must have been there for a long time,____ __
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-That must have been a very hard time for you
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That must have been difficult for her,______?